TPI ACTUAL STUD1 STUD2 LEAD
ERROR
4.0 4.0 IDLER
20/60 30 0.000000
6.0 6.0 IDLER
20/60 45 0.000000
8.0 8.0 IDLER
IDLER 20 0.000000
9.0 9.0 IDLER
20/40 45 0.000000
10.0 10.0 IDLER IDLER
25 0.000000
11.0 11.0 IDLER 20/40
55 0.000000
12.0 12.0 IDLER IDLER
30 0.000000
13.0 13.0 IDLER 20/40
65 0.000000
14.0 14.0 IDLER IDLER
35 0.000000
16.0 16.0 IDLER IDLER
40 0.000000
18.0 18.0 IDLER IDLER
45 0.000000
20.0 20.0 IDLER IDLER
50 0.000000
24.0 24.0 IDLER IDLER
60 0.000000
26.0 26.0 IDLER IDLER
65 0.000000
27.0 27.0 45/40 IDLER
60 0.000000
28.0 28.0 IDLER 35/30
60 0.000000
32.0 32.0 IDLER 40/30
60 0.000000
36.0 36.0 IDLER 30/20
60 0.000000
40.0 40.0 IDLER 50/30
60 0.000000
48.0 48.0 IDLER 40/20
60 0.000000
60.0 60.0 IDLER 50/20
60 0.000000
171.6
55/20 65/25 60
Selected Metric Threads
THREAD ACTUAL STUD1 STUD2 LEAD ERROR
6.00 5.90 IDLER 35/65
20 0.017262
5.50 5.50 IDLER 25/65
30 0.000606
5.00 4.99 IDLER 20/55
35 0.002143
4.50 4.54 IDLER 20/50
35 0.007936
4.00 3.99 IDLER 25/55
35 0.002143
3.50 3.49 IDLER 25/55
40 0.002143
3.00 3.00 IDLER 25/65
55 0.000606
2.75 2.75 IDLER 30/65
50 0.000606
2.50 2.50 IDLER 30/65
55 0.000606
2.25 2.26 IDLER 25/40
45 0.003457
2.00 2.00 IDLER 35/55
50 0.002143
1.75 1.75 IDLER 50/55
40 0.002143
1.50 1.50 IDLER 50/65
55 0.000606
1.25 1.25 IDLER 55/65
60 0.000606
1.00 1.00 55/50 65/45
40 0.000874
0.90 0.90 IDLER 45/35
55 0.002245
0.80 0.80 IDLER 55/45
65 0.000874
0.75 0.75 55/50 45/35
60 0.002245
0.70 0.70 40/35 55/45
65 0.000874
0.60 0.60 40/30 65/45
55 0.000874
0.50 0.50 55/45 40/25
65 0.000874
0.15
55/20 65/25 60
The above charts are computed for the standard gear set (10 gears, 20 through 65 teeth in 5 tooth increments). If you have additional gears, better quality threads may be possible so download the ChangeGears program and generate your own tables.